Data Logger MRL-8

WEATHERPROOF DATA LOGGER WITH INTEGRATED DATA TRANSMISSION

Collecting, processing, storing and transmitting of monitoring data – easy, convenient and quick. The MRL-8 is a battery run data, modem supported logger with splash-proof housing, USB data read-out functions and integrated solar charge controller. The very energy efficient operating mode as well as a weatherproof box qualifies the MRL-8 for data applications in remote areas far from any infrastructure.

FEATURES AND ADVANTAGES

• Weatherproof logger with integrated remote data transmission using 2G / 4G modem
• Reliable and energy-saving: optimised to collect environmental monitoring data in remote areas without any infrastructure
• Logger can be operated fully independently (with batteries or solar module), integrated solar charge controller, protection IP 67
• Ideal integration and compatibility with complete SOMMER sensor family as well as popular sensor technology products
• Backlit display for easy data reading and logger parameterisation
• Parameterisation via RS-232, Bluetooth, USB, Ethernet*
• Data readout with USB memory stick or Bluetooth-interface or USB or RS-232
• Minimum energy demand; integrated solar charge controller
• Solid, compact, and weatherproof aluminium box (powder coated)
• Remote data transmission using 2G / 4G modem, Ethernet*, USB-Stick, Satellite (INMARSAT)

*… on specific versions

FIELDS OF APPLICATION

Similar to the “smaller” MRL-6, also the MRL-8 is used for applications in environmental monitoring, where low maintenance and a very energy saving operation is needed as for example at sites with no landline power network or where no additional switch cabinet shall be installed. The MRL-8 provides comfortable data transmission through its integrated modem. For this reason all-in-one solutions (sensor, data collection and transmission) can be realised very easily. In addition, remote access as well as wireless data read out and storing are possible.

VERSIONS

MRL-8  with 4G modem

MRL-8E with 4G modem and Ethernet connection

MRL-8B  with 4G modem and internal 5Ah battery

MRL-8IE  with input extension in the same housing

TECHNICAL DETAILS

GENERAL

• Dimensions MRL-8: 180 x 150 x 60 mm | MRL-8E MRL-8IE : 180 x 150 x 100 mm (W x H x D) | MRL-8B : 180 x 150 x 160 mm (W x H x D)
• Housing aluminium box, powder coated
• Protection IP 67
• Power supply
  • internal battery (MRL-8B): gel battery, 12 V 5 Ah
  • external battery: max 12 V / 80 Ah
  • external power supply: 6 … 30 V DC
  • integrated solar charge controller for solar panel with max 50 W / 12 V
• Sensor supply 5 /100 mA or 12 V / 200 mA
• Reference voltage 2.5 V for potentiometer (max. 4 mA)
• Display LCD unit with digital contrast setting, 2 x 16 characters; LED background illumination with splash water proof cover and extended temperature range
• Keypad 5 keys for reading current measurement values and observer confirmations/inputs
• Number of channels up to 99
• Memory (internal) 4 MB failure-resistant flash memory (equivalent to approx. 500,000 measurement values)
• Operating temperature -35 °C … +60 °C (storage temperature: -35 °C … +60 °C)
• Installation easy installation; attaching to walls without extra housing
• Functions date values, intensity, maximum, aggregate values, mean values etc.
• Deep discharge protection for logger and for MRL-7 supplied sensors

INTERFACES

• Inputs
  • 4 x analogue 0 … 2.5 V (thereof 1 x PT-100 4-wire connection, 1 x NTC, 1 x 0 … 0.3 V)
  • 2 x counters (thereof 1 x impulse, 1 x shaft encoder up and down)
  • 1 x frequency input for wind speed and wind gust
  • 1 x potentiometer input for wind direction (replaces 1 x counter)
• Digital sensor interfaces 1 x RS 485 (SOMMER-Bus / ASCII protocols), 1 x RS-485 for web cam, 1 x SDI-12 interface
• User Interface 1 x communication interface: RS-232: transfer rete 9.6 to 115 kBd, 1 x USB host (only for data readout of data on USB flash drive), 1 x Bluetooth
• Output (digital resp. analogue) 4 x outputs (thereof 3 x switching outputs for alarm management)
• Inputs can be extended with an MRL-IE

DATA TRANSMISSION

• Modem integrated remote data transmission with 2G, 4G modem
• Ethernet integrated ethernet data transmission, in  data push
• Satellite integrated remote data transmission with INMARSAT modem with omnidirectional antenna
• Target server up to three target servers (http / ftp /Ftps / https) simultaneously
• Further characteristics
  • Independent transmission intervals possible
  • IP call activation for remote servicing (permanent or limited over time); fixed IP and dynamic IP
  • Time synchronisation via NTP (Network Time Protocol)